[hibernate-issues] [Hibernate-JIRA] Updated: (HHH-2680) Blobs not updated on Session.merge() for detached instances

[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2680?page=c... ] Vladimir Korolev updated HHH-2680: ---------------------------------- Attachment: FileBlob.java FixedBlobType.java Hibernate custom types can be used to solve this problem. See attached FixedBlobType.java. You should only replace @Lob with declaration of your type. So typical reference to a blob will be like this: @Type(type = "com.texunatech.hibernate.type.FixedBlobType") @Basic(fetch = FetchType.LAZY) private Blob data; Also I'm not sure about usage of Hibernate.createBlob() for copying. In my test use case this worked. But in general this may lead to errors because blob in merged entity depends on blob in detached entity. I stopped on copying blob's content to a file and returning new SerializableBlob(new FileBlob(file)), where FileBlob is in attached file. This also solved a problem with several reads from one blob. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira